Log-turning



(No Model.) 4 Sheets-Sheet 1. J. G. STONER. LOG TURNING MACHINE.

N0. 543,757. Patented July 30, 1895.

A7TORNEYS,

v WITNESSES:

(No Model.)

4 Sheets-Sheet 2. J. G. STONER. LOG TURNING MACHINE.

Patented July 30 I I I |||||I1||Il IIIIIIIIIIII L WITNESSES:

(No Model.) 4 Sheets-Sheet 3.

J. G. STONER.

LOG TURNING MACHINE. No. 543,757. Patented July 30, 1895.

WITNESSES: INVE/VTOI? 4 SheetS -Sheet 4.

(No Model.)

J. Gr. STONER.

LOG TURNING MACHINE. No. 543,757. Patented July 30,1895.

INVENTOH WITNESSES:

6% Mam v 76 I A TTORNEYS,

UNITED PATENT QEFICE.

JACOB G. STONEROF W'A YNE SBOlEtOUGIL v PENNSYLVANIA.

SPEGIFICATIONforming part of Letters Patent No. 543,257, dated July 30,1895.

I Application filed November 15,1894. Serial No, 528,943. (No model.)

To all whom it may-concern..-

Be it known that I, JACOB G. STONER, of.

Waynesborough, in the county of Franklin and State of Pennsylvania, haveinvented a new and Improved Log-Turning Machine, of which the followingis a full, clear, and exact description.

My invention relates to a log-turning machine; and it has for its objectto provide a machine of this character which will be simple, durable,and economic in construction, and which will be portable and may beapplied conveniently and expeditiously to any mill using a circular saw.

A further object of the invention is to provide a means whereby, throughthe medium of the shifting-levers, the turning device will.

be automatically brought to an engagement with the logand will so actthereon as to turn it no matter whether the log be resting upon a flator upon a cylindrical surface, and whereby, further, the mechanism foroperatingthe turning device will be brought into action simultaneouslywith the carrying of said device to an engagement with the log, and,further, whereby through the medium of their levers, under thoroughcontrol of the operator, the shifting device may be restored to itsinactive position as quickly and as conveniently as it was carried toworking position.

The invention consists in the novel construction and combination of; theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specifiation, in which similar figures and letters of referenceindicate corresponding parts in all the views.

' Figure 1 is a plan view of the log-turning mechanism applied to asawmill. Fig. 2 is a side elevation thereof. Fig. 3 is a transversesection taken practically on the line 3 3 of Fig. 2. Fig. 4 is a detailview of the shifting lever. Fig. 5 is an end view of the machine. Fig. 6is a section taken practically on the line 6 6 of Fig. 7, illustratingthe construction of a friction-clutch employed in elevating and loweringthe turning mechanism, the shaft upon which the clutch is mounted,together with the'expanding-arms thereof, being in sec: tion. Fig. 7 isa section through the clutch mechanism, showing the shaft insideelevation, the section being taken substantially on theline Z 7 ofFig.6. Fig. 8 is a view representing a. modification in they drivingmechanism for the log-turning device. Fig. 9 is a transversesectionthrough themachine, illustratinga modified form of turning device.

Fig. 10 is asection taken substantially on the line l0 10 of Fig. 9, andFig. 11 is a section. tak,en practically on the line 1111 of Fig. 10.

In carrying out the invention the log carriage A may be of any approved.or of the usual construction, being. held to travel upon suitable tracks10, and the said carriage is provided with the usual head-blocks B andknees 0 adjustable therein. The saw-mandrel 11 is mounted in suitablebearings and is provided with a fast and loose pulley, designated,respectively, as 12 and 13, and an additional and smaller pulley 14,adapted for driving purposes. The saw 15 is a circular one and is placedin a proper position to enter the log when the latter is placed upon thecarriage.

The log-turning mechanism proper is mainly located in a frame, (shownbest in Fig. 1,); comprising side beams 16 and 17 and end beams 18 and19. A shaft 20 is journaled in this frame, carrying at what may betermed its outer end a beveled gear 21, and a shaft 22 is journaled insuitable'bearings parallel with the outer beams 17 of the said frame,and the shaft has loosely mounted upon it two beveled pinions 23 and 24,meshing with the beveled gear 21, one at each side, and a double clutch25 is feathered upon the line-shaft 22, being capable of engagement witha clutchvface upon either of the pinions 23 and 24.

The double clutch is manipulated by a link 26, which is connected withit, as shown in Fig. 5, and also connectedv with a crank-arm.

27, mounted upon a rock-shaft 28, sustained in suitable bearings, whichshaft at its inner endis pivotally connected with the lower forked endof a hand-lever 29. The lower extremity of the fork-section of the lever29 has pivoted to it one end of a rod 30, which in its turn-at itsopposite end is in swivel connection with a shifting-lever 31, mountedupon a suitable stud or standard 32, carried by one of the said sidebeams of the aforesaid frame.

An auxiliary frame is located practically within the main frame of theattachment, and the said auxiliary frame may be said to consist of twoparallel side bars 33, pivoted at or near one end upon the driven shaft20. At the opposite or front end of this auxiliary frame a short shaftor mandrel 34 is journaied in the beams or bars 33, extending beyond theoutermost side beams 17 of the main frame, as shown in Fig. l, and uponthis shaft or mandrel 34 the log-turning device proper is located,consisting of a spurwheel 35. (Shown in side elevation in Figs. 3 and5.)

The shaft 34 is driven from the driven shaft 20, usually through themedium of a small gear 36, secured upon the shaft 20, and a similar gear37, secured upon the shaft 34, both of these gears being between thebars 33 and an intermediate series of gears 38, connecting the uppermostgears 36 and 37.

Upon the front end of the line-shaft 22 a pulley 39 is secured, wherebysaid shaft is driven by a belt 40, passed over the pulley 39 and thesmaller pulley 14 on the saw-mandrel 11. This belt may be tightenedwhenever necessary through the medium of atightening-pulley 41, adaptedto engage with the lower strand of the belt, the said pulley beingmounted to turn upon the crank-arm 41, attached to a short shaft 42,journaled in suitable bearings on the inner side of the main frame, asshown in Fig. 1, and the shaft 42 atits inner end is provided with ashorter crank-arm 42*, which, through the medium of a rod 43,ispivotally connected with a crank foot-lever 44, journaled in anyapproved manner convenient to the hand-lever 29, whereby the operator inmanipulating the hand-lever may likewise bring into action thefoot-lever.

Through the medium of the two gears 23 and 24 the shaft 20 may be turnedeither to the right or to the left, and in order that the auxiliaryframe comprising the beams 33 may be raised and lowered by the action ofthis shaft 20 a clutch D is employed, operated by the shifting-lever 3l.This clutch is shown in detail in Figs. 6 and 7, and comprises acircular casing 45, held to turn freely around the shaft 20 at its innerend, the said casing being connected with the free end of the auxiliaryframe, as shown in Fig. 1, through the medium of an arm 46.

Within the circular casing a disk 47 is secured to the shaft 20 by meansof pins or otherwise, and a series of shoes 48 is made to engage withthe inner surface of the casing or drum 45, each shoe being providedwith a stem or spindle 49, held to slide in radial openings produced inthe disk 47, the lower ends of the spindles or shanks, which are rounded0%, being made to enter slots 49, extending through the disk or fromside to side. The upper or outer walls of the slots are inclined, andthe said slots extend into the openings through which the shaft 20passes.

A ring 51 is held to slide upon the inner end of the said shaft 20, andthis ring is provided with a series of expanding-arms 52, correspondingin number to the number of slots 49 in the disk 47. The expanding-armsslide upon the shaft 20, but their outer edges are inclined. Thereforethe arms are substantially wedge-shaped, and when the .ring 51 is forcedin direction of the disk the expandingarms will have Wedge -like actionon the shanks of the shoes 43 and will force said shoes outward tofrictional engagement with the casing or drum 45, whereas when the ring51 is carried away from the disk the brakeshoes are carried out ofengagement with the casing and the said shoes turn free of the casing.The ring 51, carrying the expanding arms, is operated through the mediumof the shifting-lever 31, heretofore referred to, the said lever beingdirectly connected with said ring.

In Fig. '8 I have illustrated a slight modificationin the manner ofdriving the turning wheel or spur 35, and this form of driving mechanismis preferably used when the auxiliary frame or that carrying the spurmust be of great length. In this event the frame consists of two sidepieces 53, connected by cross-bars 54. The shaft 20 is provided with abeveled gear 55, which meshes with a like gear 56, secured upon a shaft57, journaled longitudinally in the frame, the said shaft at itsopposite end being provided with a second beveled gear 58, and this gearis made to mesh with a corresponding gear 59 on the spurshaft 34.

lhe operation is as follows: When it is desired to turn the log thehand-lever is moved outward, rocking thereby the shaft 28 and throwingthe clutch 25 into engagement with the inner beveled gear 23. At thesame time the hand-lever is moved in direction of the main frame,thereby bringing the expanding arms into play upon the shoes of theclutch, forcing said shoes against the periphery of the casing. Theshaft 20 being rotated will cause the clutch to act to carry theauxiliary frame upward and in direction of the log, as shown in Fig. 5,and the spur-wheel being rotated meanwhile will engage with the log andwill proceed to turn it. As soon as the spur-wheel is brought inengagement with the log the hand-lever is moved away from the mainframe, disconnecting the frictionclutch from the shaft 20, and when thespur enters the log it will continue to engage with the log and turn ituntil purposely removed therefrom. When the log has been turned a properdistance the hand-lever is moved in a contrary direction, throwing thedouble clutch 25 in engagement with the outer gear 24, and thehand-lever is again moved in di rection of the main frame to bring thefriction-clutch into action. Consequently the shaft 20 will be revolvedin a contrary direction, and, through the medium of the frictionclutch,the auxiliary clutch, with its spur, will be carried to a position ofinactivity or to a IIO bearing upon the main frame. The handlever isfinally carried to a vertical position, which will bring thedouble-faced clutch between the two gears 23 and 24 and out ofengagement with both, and consequently the attachment is ready to bebrought into action when again required.

In Figs. 9, 10, and 11 I have illustrated a modified form of the turningdevicea form which will adapt itself to any size of log. Under thisconstruction, instead of the spurwheel36, heretofore described as beingsecured upon the drive-shaft within the auxiliary frame 33, a wheel 60is substituted,

containing but a few teeth 61, and these are formed in pairs upon theperiphery of the Wheel, as shown in Fig. 10, and upon the shaft 34 inthis auxiliary frame, instead of the gear 37 a plain drum 62 is mounted,and the wheel 60 and drum 62 are made to carry ashiftingchain E. Thischain consists of a series of links 63, each provided at one end with aspur 64. The links are preferably made solid, and are pivotallyconnected by plates 65, located at opposite sides of their opposingends, the spur of one link being next to the plain end of the adjoininglink, as shown best in Fig. 9. The abutting ends of the links arestraight, except at their inner sides, where they are rounded off, inorder that they may readily pass over the wheel 60 and the drum 62, andsince the major portion of the abutting ends of the links are straight,as heretofore stated, when the spurs are brought in engagement with alog to turn the same the links virtually form a solid bar, since theyare incapable of yielding. The links on their upward passage pass over aguide-plate 66, secured to the sides of the auxiliary frame 33, as shownin Figs. 9 and 11, and this guide-plate is provided at its sides withflanges 67, (particularly shown in Fig. 11,) and under this constructionit will be observed that the chain cannot have lateral movement. In theoperation of this form of the device the spurs 64 present themselvessuccessively to the log, enter the same, and keep it revolving in propertime, since the spurs are located a predetermined distance apart, and aturning device of this-description, it is obvious, will accommodateitself to a log of any size or to a log that is exceedingly irregular,as well as one that is symmetrical in cross-section.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. In a log turning attachment the combination ofarotatively mounted machine shaft, means for driving the same inopposite directions, said means comprising a counter shaft and reversinggear adapted to communicate the movement thereof to the machine shaft, aframe loosely hung on said machine shaft, a rotating spur turnercarried. by the frame, means for driving said spur turner, and a clutchmechanism for connecting the -frame to the machine shaft, whereby theframe is swung on its pivot to bring the spur turner into and out ofoperative position, substantially as set forth.

2. In a log turning attachment, the combination of a rotatively mountedshaft, a frame pivotally mounted thereon, means for looking said frameto the said shaft whereby the frame is turned on its pivot, a spurturner on the frame adapted to engage the log, and means for drivingsaid turner from said shaft, substantially as set forth.

8. In a log turning attachment, the combi nation of a rotatively mountedshaft, a clutch device mounted thereon, a frame loosely pivoted on theshaft and connected to the loose member of said clutch-device, a spurturner mounted on the frame and adapted when the same is swung on itspivot to engage the log to be turned and means for actuating said spurturner, substantially as set forth.

4. In a log-turnin g attachment for saw mills, the combination, with apivoted frame, a rotary spur turner carried by the said frame, a drivenshaft, and a driving connection between the driven shaft and the spurturner, of a gear secured upon the driven shaft, a line shaft, pinionsloosely mounted upon the line shaft and engaging with the said gear onthe driven shaft, a double clutch adapted for engagement with eitherpinion, a shifting device connected with said clutch, and a frictionclutch likewise located on the driven shaft and connected with the saidframe, as and for the purpose set forth.

5. In a log-turning attachment for saw mills, the combination, with aline shaft having reversing gears, a clutch controlling the same, ashaft driven from the gears of the line shaft, a pivoted frame, a rotaryspur turner, and a driving connection between the-driven shaft and thesaid spur, of a friction clutch carried by the driven shaft andconnected with the said spur-carrying frame, a shiftinglever, and aconnection between the shifting lever, the friction clutch and theshifting clutch on the line shaft, all operated substantially as shownand described.

6. The combination, with a shaft, means for rotating the same, a pivotedframe, and a rotary log-turning device carried by the said frame, of aclutch, the same consisting of a casing or drum, loosely mounted on theshaft JACOB G. STONER.

Witnesses:

' F. FOUHMAN,

J. H. GEHR.

